1. EOT - Embedded OpenType fonts

    Type of font that can be derived from a regular font, allowing small files and legal use of high-quality fonts. Usage is restricted by the file being tied to the website

  2. rel=noopener

    Ensure new browsing contexts are opened without a useful `window.opener`

  3. TTF/OTF - TrueType and OpenType font support

    Support for the TrueType (.ttf) and OpenType (.otf) outline font formats in @font-face.

  4. WOFF - Web Open Font Format

    Compressed TrueType/OpenType font that contains information about the font's source.

  5. WOFF 2.0 - Web Open Font Format

    TrueType/OpenType font that provides better compression than WOFF 1.0.

  6. cachestorage api: open

  7. clients api: openwindow

  8. document api: open

  9. eventsource api: `open` event

  10. eyedropper api: open

  11. hiddevice api: open

  12. hiddevice api: opened

  13. htmldetailselement api: open

  14. htmldialogelement api: open

  15. idbfactory api: open

  16. idbindex api: opencursor

  17. idbindex api: openkeycursor

  18. idbobjectstore api: opencursor

  19. idbobjectstore api: openkeycursor

  20. midiport api: open

  21. paymentrequestevent api: `openwindow()`

  22. rtcdatachannel api: `open` event

  23. serialport api: open

  24. storagebucketmanager api: open

  25. usbdevice api: open

  26. usbdevice api: opened

  27. websocketstream api: opened

  28. websocket api: `open` event

  29. window api: open

  30. window api: opener

  31. window api: open: `features` parameter accepts `"attributionsrc"` value

  32. window api: open: `features` parameter accepts `"popup"` value

  33. window api: open: one `window.open()` call per event

  34. window api: open: opened relative to the multi-screen origin

  35. xmlhttprequest api: open

  36. css at-rule: `@font-face`: opentype cbdt and cblc rendering

  37. css at-rule: `@font-face`: opentype colrv0 rendering

  38. css at-rule: `@font-face`: opentype colrv1 rendering

  39. css at-rule: `@font-face`: opentype sbix rendering

  40. css at-rule: `@font-face`: opentype svg rendering

  41. css property: content: no-open-quote

  42. css property: content: open-quote

  43. css property: text-emphasis-style: open

  44. css property: text-emphasis: open

  45. css selector: `:open`

  46. css selector: `:popover-open`

  47. html element: details: open

  48. html element: dialog: open

  49. headers http header: cross-origin-opener-policy